I'd easily say he could be lying.. Look at what Nolan did when he denied, denied, denied, that Robin was in the movie. Anyone can keep up a lie for long enough to make us think it's truth, doesn't mean they still aren't lying.

it's not lying per-say... but for any one who hasn't caught on that movie studios and all involved, tip-toe around truths and word these very ambiguously do so for a reason